422588240 has 60 divisors (see below), whose sum is σ = 999693084. Its totient is φ = 166099968.

The previous prime is 422588213. The next prime is 422588251. The reversal of 422588240 is 42885224.

It can be written as a sum of positive squares in 6 ways, for example, as 120384784 + 302203456 = 10972^2 + 17384^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 422588240.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1570826 + ... + 1571094.

Almost surely, 2^422588240 is an apocalyptic number.

422588240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 422588240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (499846542).

422588240 is an abundant number, since it is smaller than the sum of its proper divisors (577104844).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

422588240 is an equidigital number, since it uses as much as digits as its factorization.

422588240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 624 (or 349 counting only the distinct ones).

The product of its (nonzero) digits is 40960, while the sum is 35.

The square root of 422588240 is about 20556.9511358081. The cubic root of 422588240 is about 750.4224227747.

The spelling of 422588240 in words is "four hundred twenty-two million, five hundred eighty-eight thousand, two hundred forty".